Automatic lubricator



E. HANSON.

AUTOMATIC LUBRICATOIL APPLICATION FILED MAR. 7, I919.

Patented Mar. 23,1920.

2 SHEETS-SHEET l- E. HANSON. AUTOMATIC LUBRICATOR.

APPLICATION FILED "AR- 7, I9I9- Patented Mar. 23, 1920.

2 SHEETS-SHEET 2.

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openings 15 adapted for permitting flow of 011 from the pocket to the lower chamber 13. Preferably, the body 11 is formed outwardly from the oil pocket 12 with openings 11 to permit the flow of oil into the pocket through the outlet 6 to be observed. In this case the walls of the pocket 12 consist of a glass tube d2 which forms a tight joint at its lower end with the partition 1% and at its upper end seats tightly against the head 5. Preferably the body 11 is con structed with upper and lower sections 16 and 17 respectively, having screw threaded connection at a' point below the partition 14. Extending across th lower section 17 is a flexible diaphragm 18 tightly closing a portion of the lower chan'iber 13, which thereby constitutes an expansion ('humhr 19. Extending through the pocret 12 and lower chamber 13 is the valve stem 21. slidably mounted in a suitable opening in the partition 14. The lower end of the valve stem 21 is adapted to bear against spring contact arm 36 and the diaphragi'n 18 so that in the movement of the diaphragm the valve 7 will be actuated to open and close the opening 6. Preferably the valve stem 21 is provided for adjustment with a separately formed lower portion consisting of a sleeve 23 screw threaded on the lower end of the portion 21 of the stem and held in position by lock at 2 1. To prevent rotation of the valve, the opening may be squared and the stem 21 similarly formed as indicated in the drawing.

The valve stem 21 is composed of a rectangular part 21, and the top thereof carriesan inverted cone slnr ed member 20 having oil. holes at passing there-through and its top located. directly below the outlet port 6 so as to receive the o l therefrom. The cone shaped member 20 has an air hole 4-3 extending upward from its sides to the center where the said air hole forms a seat and a sliding connection with the tubular stem 7 which carries the valve 7. Atthe point of this connection a tapered flange is provided outwardly from the tubular stem 7 which fits tightly against a. similar formed seat in the cone shaped member 20. This rorms a. tight connection with the air hole 13 and the tubular stem 7 The lower end of the body 11 terminates in a shank 25 which is screw threaded or otherwise adapted to be secured in the oil opening of a bearing. The shank is formed centrally with a longitudinal bore -10, having tightly inserted therein the lower end of a tube 26 which is preferably formed intermediately of its ends in a coil 2'? disposed within the expansion chamber 19 and has the upper end suitably connected with an opening 28 in the diaphragm 18. Preterably the diaphragm 18 has an annular depression 29 with which the opening; 28 coincides so that oil in the upper chamber 13 will be completely drained oil to the bearing through the tube 26. A tube 30 connects an upper portion of the upper chamber 13 with the atmosphere and extends through the expansion chamber 19 whereby when the oil flows from the chamber 13 through the tube 26 to the bearing, air will be drawn through the tube 30 to cool the expansion chamber. .Preferably the tube 30 is of less diameter than the tube 26 and extends through the latter to a point toward its lower extremity, at which point it is led out through the side 01' the tube 26 and through the *all oi. the body. The upper end of the tube 30 may have a suitable shield or cap 31 by which oil will be prevented from entering the tube.

As shown in the drawings, a tube 32 is connected to the tube 26 toward its lower extremity and extends upwardly through the expansion chamber 19 and is properly connected with a suitable opening 39 in the side of the body 11 in which it is tightly secured. By means of the tube 32 oil may be applied to the bearing with an oil can or in any other convenient manner when desired, and in the event of stoppage of the oil outlet of th tube 26 the oil will. rise and flow through the tube 32 thereby indicating that such stoppage has occurred. A wire can then be pushed through tube 32 to the revolving shaft to open the oil outlet. It also forms an outlet for the air, that otherwise would expand against the flow of oil in tube 26 on its way to the bcariu g. hen the bearingbecomes heated th tube 32 will assist the tube 26 in conveying the heat to the air within the expansion chamber 19. The lower section 17 of the body is preferably formed in the wall with an opening 34: normally closed by a plug 35 screw threaded or otherwise properly scoured therein, and adapted to.be removed when desired to permit equalization of the pressure within the expansion chamber 19 and that of the atmosphere near the bearmg.

When desired. the lubricator may be arranged to close the circuit of a hell or other alarm when the bearing becomes heated. this being accomplished in the present instance by providing in contact with the diaphragm 18, the spring contact arm 36 which is adapted for establishing connection with a contact stud 37 in an outward movement of the diaphragm. The arm 36 and stud 37 are properly insulated and provided with suitable means of connection indicated as members 33 and as binding-posts 38.

From the above description taken in connection with the drawing, the operation of the device will be clearly understood. Non mally the outlet 6 is opened to a desired degree by actuation of the member 10 to per lnltthe oil to flow to the pocket 12 at a desired rate or to prevententirely the flow of oil from the reservoir. It will. be seen that the air displaced from the pocket is permitted free movement to the upper end. of the reservoir tln-ough the tubular stem 7. l llhen the bearing becomes heated, the heat will be conveyed through the tubes 26 and 32 to the air within the expansion chamber i9 which being thereby caused to expand will move the diaphragm 18 outwardly thereby forcing the lower valve stem 21, which has connection with upper stem 7 and the valve 7 in an upward. position, perting; the oil in the reservoir to :[low treely to the bearing which will cool oil from the receiving coil. lln this movement of the oil, air will be drawn through tube 30. The flow of oi l and air through the tubes 30 and respectively will result in rapid cooling oi? the air within the expansion chamber 19, so that the valve will be closed to prevent an unnercss-arv prolonged flow of oil to the bearing.

While the above described term of the in vention is considered preferable, the invention is obviously not restricted. to th par ticular emboi'linient set forth, and the right is reserved to variation, modification and the use 0t equivalents falling; within the spirit and scope of the invention as indicated by the latitude of the claims,

What is claimed is 1. it lubricator comprising an oil reser voir, a body connected therewith andhaving a pocket :tor receiving oil from the reservoir, a valve controlling the flow oi oil trom the reservoir to the pocket, said body having a chamber located below the pocket, a diaphragm in said chamber, a tube having one end connected with the outlit oi the lubricator and its other end passthrough the diaphragm tor leading, the irom above the diaphragm to the outlet and means for actuating the valve by the movement of the diaphragm.

in a lubricator, the combination with the oil reservoir, oi a body formed with a pocltet adapted :t'or receiving oil trom said reservoir, a tube connecting said pocket and the outlet ot the lubricator, a valve normally preventing flow of oil to the pocket, a thermoscopic device tor opening; and rlosiug' said valve, said device having an expansion chamber, and said tube exteudiru; through said chamber, and a second tube ext-ending through said expansion chem her, said second tube establishing connco tion at one end with said oil pocket, and having the other end open to the atmosphere.

3. In lubricator, the combination with the oil reservoir, of a body formed with a pocket adapted for receiving oil from said reservoir, a valve for controlling the supa. In a lubricator, a closed oil reservoir having an oil outlet, a hollow body mounted on the lower end of said reservoir and formed with an oil pocket establishing connection with said outlet, a tubular steel torming an air vent connection between the upper end of the pocket and the reservoir and having a valve thereon for controlling the flow of oil to the pocket, said body further formed with a lower chamber and with a passage between said pocket and said lower chamber, a diaphragm closing a portion of said lower chamber, means for actuating the valve by the movement of the diaphragm, and a pair of tubes extending through the portion of said lower chamber closed by the diaphragm, said tubes having ermnection at one end with the portion of said chamber communicating with said passage, one of the tubes having connection at its other end with the atmosphere, and the other tube adapted at its other end for co11- nection to the oil opening of a bearing.

5. A lubricator comprising an oil reservoir, a body having a pocket therein for receiving the oil from said reservoir, a valve for controlling the flow of oil to the pocket, a thermoscopic device for opening and closing said valve, means for regulating thev operation. of said device, said means con sisting of a tubular stem having its lower end forming the valve and said stem having a connection in said pocket, a second valve stem operated by said thermoscopic device, and an adjustable member connected with the upper end of the first stem and having,

a lock nut adapted to hold said member I.

and valve in an open or closed position.

6. A. lubrieator comprising an oil reservoir, a body having a pocket therein for receiving the oil from said. reservoir, a valve normally closing said connection, a connection between said pocket and the outlet of the lubricator, a thermoscopic device for opening and closing said valve, said device including an expansion chamber and a tube connected with the outlet of the lubricator and passing through the said chamberto the exterior thereof for heating the chamber and serving the purposes of an emergency oiling opening, a cleaning tube for the outlet, and an overflow for the oil when the outlet is stopped up.

7. A lubricator comprising an oil reservoir, a lower body in communication with the reservoir, a hollow valve controlling such communication, a hollow stand connected and having an opening therein communicating with the upper part of the oil reservoir, an expansion chamber in the c body, a diaphragm therein upon which the oil drops, means for conducting the oil from the diaphragm to the outlet of the lubricator, means for supplying air to the chamber above the diaphragm, and means for directing said air through the hollow valve and its hollow stem into the reservoir to prevent the formation of a vacuum therein while the oil is flowing therefrom.

8. A lubricator comprising an oil reservoir, a body below the same and in communication therewith, a hollow stem having a valve formed thereon for controlling such communication, a diaphragm in the hollow body, a second stem within the hollow body,

and adapted to be engaged by the diaphragm to move the valve off its seat, an oil distributer forming part of said stem and provided with air ducts for leading air to the hollow stem, and means below the diaphragm for leading the oil therefrom to the outlet of the lubricator and for admitting air to the body above the diaphragm.

9. i lubricator comprising an oil reservoir, a hollow body below the same and in communicationtherewith,a valve controlling such communication, a diaphragm in the hollow body, means for causing the movement of the diaphragm to move the valve ofl? its seat, an electric alarm operated by said diaphragm, a tube below the diaphragm and having one end passing through the center and its other end connected with the outlet of the lubricator and a second tube communicating with the atmosphere and 

